Single Pressure Reducing Station
A-4000 Series Oil Removal and Pressure Reducing Stations
The A-4000 Series Oil Removal and Pressure Reducing Stations are available in single or dual PRV models in 10 or 20 SCFM (4.7 or 9.4 L/s) maximum flow capacities. In addition, each unit features a four-way bypass valve, coalescing and activated charcoal oil removing filters, and is completely piped with copper tubing which reduces friction, allows higher flow rates, and meets fire codes in mechanical equipment rooms. The filter combination removes both oil aerosols and vapors to provide clean, oil free air for pneumatic control systems. All models provide maximum performance for a period of one year at which time the coalescing and activated charcoal filter elements will need to be replaced. Gauges are provided to monitor system operations and performance. All models can provide filtered, high pressure air to remote PRV stations. All models have a maximum input pressure rating of 150 PSIG (1050 kPa) and an upper temperature limit of 120°F (52°C).
Note: The air supply to these stations must be from a properly broken in air compressor producing less than 6 ppm aerosol oil (as measured by a Johnson Controls A-4000-120 Oil Indicator on the compressor tank outlet) and must also pass through a properly operating air dryer.
Single PRV models are factory set for approximately 20 PSIG (140 kPa) and
dual PRV models are factory set for approximately 15 and 20 PSIG (105 and
140 kPa). Dual 10 SCFM units have a maximum of 1 PSI (7 kPa) pressure drop
with a 10 SCFM flow from the PRVs through the three-way air valve; dual 20
SCFM units have a maximum of 2 PSI (14 kPa) pressure drop. The three-way
air valve is equipped with a 1/2 in. O.D. compression fitting to furnish
the dual supply air to the system. A 1/2 in. connection is furnished to
provide a constant 20 PSIG (140 kPa) supply to local control panels and a
3/8 in. connection is furnished to provide filtered high pressure air to
remote PRV stations.
Note: All A-4000 Series Oil Removal and Pressure Reducing Stations are shipped from the factory with the activated charcoal filter packaged separately in the carton. The filter must be reinstalled by screwing it onto the threaded pipe of the filter head. Tighten the filter to the point where the white label faces the front of the unit
Flow Consumption of the A-4000-139: Up to a maximum of 10 SCFM(4.7 L/s)Warning: If system air flow consumption increases beyond the maximum flow, oil will be forced through the coalescing filter and saturate the activated charcoal filter before its required replacement time.
Compressor Horsepower (50% running time) of the A-4000-139: 7.5 hp and under
PRVs of the A-4000-139: SingleReplaces Part Number: A-4000-139